WHEELS & TIRES
1. 13 inch diameter wheels and 15 inch diameter stock car racing wheel of steel or aluminum construction not to exceed 10 inches in width are approved.
2. Hoosier NWP4 Left and Right from Steve Thompson/Prosser Automotive only. NW 4 Cylinder Late Model Shoot Out races, teams can run Hoosier F-35 if they choose.
3. NO TIRE SOAKING will be permitted at anytime. All cars will be checked with a hardness gage. All tires will be check. Checks will be done through out the course of the day.
ENGINE DISPLACEMENT & WEIGHTS
1. Maximum engine size is 2420cc’s, and minimum weight is 1800 pounds/maximum weight 2400 pounds. 2. At this time no Super Charger, Turbo Charger, or Nitrous Injection. 3. Holley 2brl. /Webber Side Draft and Mikkuni Slide/Side Draft carburetors will be the only carburetion permitted. No down drafts, Predators or Holley 4brl. (VW Air Cooled may use down draft Webbers). 4. BONE STOCK FUEL INJECTION MOTORS WILL BE ALLOWED DURING THE 2017 SEASON. (EXAMPLES: MOTORS OUT OF A FORD MUSTANG OR FORD RANGER) PLEASE ASK BEFORE YOU DO BUILD YOUR MOTOR IF YOU HAVE QUESTION. WEIGHT RULES All modified stock production engines in size from 1800cc to 2420cc All modified stock production engines ranging in size from 1800cc to 2420cc must weigh .85 lbs per cubic centimeters with 2 or 4 venturies. Cars using the following engine - aftermarket 2300 c.c. Fords must meet these weights Ford Cast Iron head …………………………………………………1950lbs Ford D-Port Aluminum cylinder head………………………………2000lbs Ford w/aluminum SVO & ARCA cylinder head…………………....2100lbs Ford 2376c.c. to 2420c.c.…………………………………………...2150lbs
Ford Engine Combination 2.5 (2500c.c.)……………………………2100lbs
2.5 Crank in 2300 block is the only approved 2500c.c. combination
Cast Iron Cylinder Head Only. Porting allowed, any valve size and any intake
"NO Roller Camshaft”
Holley 4412 Carburetor, NO Side Draft Carburetion,
Stock Production Block and Head ONLY for this engine combination.
Twin Cam sixteen valve engines/ ANY New twin cam engine must meet Alliance approval for racing use
Chevy 2000/2200 Echo Tech ………………..2100lbs Honda V-Tech 2000/2200……………………2100lbs Stock Fuel Injection…………………………..2050lbs Rotary Motors
1. 12A Stock block must weigh 2000 lbs.
2. 12A Ported block must weigh 2100 lbs.
3. 13B Stock block must weigh 2200 lbs.
4. All rotary powered cars must use a two barrel carburetor with 38mm chock and meet all noise rules.
Please remember that the above weights and other penalties were determined by current performance and if anyone engine combination or team shows it can become dominate action will be taken to even the playing field, please understand that we are not in anyway trying to combat your ingenuity but just trying to keep as many teams as competitive as possible. Fuel Rules 1. Racing fuel only, No Nitro or nitro mixed additives, VW A/C engines may use alcohol General Rules
1. Inline 4 cylinder, 4 cycle gas engines produced for use in foreign or domestic automobiles for sale in the United States and Canada
2. Substitution of production cast iron block with aftermarket aluminum block is prohibited. This dose not apply to air cooled VW’s
3. Any transmission with 2 forward gears and operable reverse may be used.
4. Any transmission adapter may be used. Tech approval required.
5 Cars using open stock style clutch must use scatter shield minimum 180 degrees on driver’s side of bell housing; 270 or 360 degrees are recommended. Minimum steel thickness is 3/16 inch. Minimum aluminum thickness is 1/4 inch. Tech approval required.
6. Starter and clutch assembly must be operable. Cars must start under their own power
7. Exhaust must exit behind driver. If it exits out the door you must use a tail pipe protector.
8. Exhaust noise level shall meet track requirements. All cars must use a muffler and meet 90dba @ 100ft. This is a requirement set forth by the race tracks as of 2014
9. Oil cooler, remote oil filter, dry-sump, external drain lines and attachments shall be of proper design and strength to resist bursting or leaking. Tech approval required.
10. Radiators shall remain inside body shell. Cooling fans, engine driven or electrical, must be enclosed within shroud. Tech approval required.
11. Separate overflow containers with 1 quart minimum capacity required for radiator and crankcase/dry sump ventilation system. Crankcase/dry sump overflow container must be metal. Tech approval required.
12. Any rear end including quick change may be used.
13. Suspension type is open. Titanium or magnesium components are prohibited.
Roll Cage
1. Six point roll cage mandatory of 1-1/2 inch minimum diameter x 0.090 inch wall thickness minimum ERW or DOM. 1-3/4 inch is recommended.
2. Roll bar shall have at least one diagonal brace from top of hoop to bottom.
3. Minimum of 3 horizontal door bars required on driver’s side of cage and 2 door bars required on right side of cage. All door bars shall have vertical braces welded between them. Top left door bar may not be lower than 3 inches below driver’s window opening. Left door bars must be plated
4. One overhead bar from front to rear in center of the halo that is out of reach of the driver’s helmet when driver is strapped in, is required.
5. One vertical (Earnhardt Bar) is needed from middle of halo hoop front down to cage front hoop at dash level.
6. Two braces from within 6 inches of the top of the main roll bar hoop down to the rear clip are required. Braces are to extend as far back as the body will allow.
7. Energy absorbing padding must be installed on all bars and tubes in driver area where contact maybe made between driver extremities and bars.
8. Minimum of 2 windshield braces must be placed behind windshield. We recommend 3
9. Nerf bars shall be minimum one inch square or one inch diameter round tubing with rounded ends located within body. No exterior Nerf bars
10. Bumpers required on front and rear.
Battery Boxes
1. Battery shall not be installed vulnerable areas.
2. Battery must be separated from driver by a firewall and securely attached to the frame or chassis
3. If battery is installed inside driver compartment, it must be enclosed inside a metal box of 20 gage minimum thickness.
Driveline
1. Aluminum or steel drive shafts permitted. Composite drive shafts are prohibited.
2. Drive shaft must be painted white with car number on it.
3. Two steel; drive shaft containment loops or straps, 0.125” x 1” minimum cross section are required. One at each end of driveline.
Brakes
1. Brakes shall be on all four wheels and operable at all times.
2. Driver adjustable brake biasing mechanisms are approved.
Fire Extinguisher
1. A 2.5 lb. (minimum) carbon dioxide or dry powder, Coast Guard approved, with gage in working order and fully charged extinguisher is required.
2. Extinguisher must be in drivers reach while strapped in car.
3. An on board Halon fire suppression system is recommended, but not required. If installed, minimum one nozzle each in engine bay and driver area. Safety note: Position nozzle and aim it away from driver in direction of anticipated flame sources. Halon can cause frost bite.
4. Fire extinguisher or Halon fire suppression system must be securely mounted in car.
5. Each car must have a 5 lb. minimum fire extinguisher with current inspection tag readily accessible in pit area.
Master Electrical Switch
1. A master electrical shut off switch must be installed within easy reach of the driver and safety crew members to kill the electricity to all electric components in the event of an emergency.
2. If the master shut off switch cannot be located within easy reach of safety personnel, then an additional master shut off switch must be installed in a location accessible to safety personnel.
3. The master shut off switch must be clearly marked.
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